W

white-space character:A space, tab, line-feed, carriage-return, form-feed, vertical-tab, or new-line character.

wild card:One of the DOS characters (? and *) that can be expanded into one or more characters in file-name references.

Windows version stamp :A line of text inserted in every Windows application when a .RC file is compiled. The stamp contains the Windows version number for which the application was compiled.